Opinions I've gathered from the CDRW forums.
Lite-On 24X: Most versatile for game backup. Supposedly not as well built as Plextor or Teac.
Teac 24X: Best all around burner for the price. Best media compatibility and fastest seek times of the three. Game backup not as good as Plextor or Lite-On, but better than most burners.
Plextor 24X: One of the best all around burners, but $$$. Media compatibility not as good as Teac, and game backup not as good as Lite-on.
Beyond 24X, the speed increases are there, but not huge, and some have more problems with some media. (ie. 32X burn on 16X media is often not as reliable as 24X burn on 16 media, for obvious reasons.)
I can tell you the Plextor Windows firmware update app is suck however, at least for the 12X burner. Wouldn't update one burner I had a work, and hung during an update of my friend's burner, on a different computer. (Fortunately it didn't trash his firmware though.) Dunno about the update apps of other brands though. Might be equally bad. (Well the Yamaha one I tried worked great and showed what was happening, and never hung the few times I tried it. It was DOS based however.)
I went with the Teac CD-W524E. Review
here